Improvement in pumps



JULIAN GRZYBOWSKI, OF DETROIT, MICHIGAN.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. h, dated July 27, 1875;application filed April 22, 1875.

To all whom it may concern: i

Be it known that I, JULIAN GRZYBoWsKI, of Detroit, in the county ofWayne and State of' Michigan, have invented certain Improvements inPumping-Engine, of which the following is a specification:

My invention relates to pumps and it consists of two pumps arranged atopposite ends of a common frame or bed, both driven from the same crank,and each arranged to be disconnected at will, and the other used alone,together with outlet-pipes arranged so that the stream of water can bethrown from either one or both separately, or from both through onecommon delivery. It further consists in certain novel features ofconstruction in the pumps themselves, all as hereinafter more fullydescribed.

Figure lis a side elevation of the apparatus as a whole ready for use.Fig. 2 is a transverse vertical section on the line .fr m of Fig. l.Fig. 2 is a longitudinal vertical section of one of the pumps; and Fig.4 is a similar view of the same, showingamodiiication of the valves.Figs. 5 and 6 are plan views of the valves and packing detached, andFig. 7 a portion shown in detail.

In constructing my improved apparatus, I provide a cylinder, C, with apiston, P, as represented in Fig. 3. On the top of the cylinder Iconstruct a triangular chamber, B, with an inlet-opening, c, and twooutlet-openings, having valves b and b arranged over them,

and opening into a chamber, U and U', at the sides, these latter beingconnected to the cylinder by passages a and a', as shown. 'The top ofthese chambers is formed by a detachable plate, E, having ports in it,with valves d and d arranged thereon, and opening into another chamber,I, to the upper part of which is connected an air-chamber, A, therebeing an outlet-opening, t', at the side, and another one, c, at rightangles thereto, as shown in Figs. 2, 3, and 4. The lower set of valves band bI construct by taking a sheet of rubber or leather of the propersize to cover the doubly-inclined top of the chamber B, as representedby G, Fig. 6; and after securing thereon the metal valve-plates b andb', I cut slits f, as shown, around the plates on three of their sides,leaving it uncut across the center, at the point where it rests on the'apex of the top of chamber B, this sheet Gr thus forming a packing forthe valves, and also at the point where the plate E bears upon it,between the chambers U and U', and also betweenthe plate E and the topof the chamberwalls, as shown in Fig. 3. rThe upper set of` valves, dand d. are constructed in a similar manner, as'shown in Fig. 5, thesheet of rubber G having a slit, l, cut at each side, and also being cutaway at the center, thus leaving the valves attached at their outeredges, instead of at the center, as the others were. This sheet G islaid flat on the plate. E, and serves as a packing for the walls of thechamber I, where they rest on plate E, as Well as packing and hinges forthe valves. As shown in Fig. 2, the chamber I and the air-chamber A arecast in one piece, with ears t at the sides, by which it is bolted tothe top of the chambers U and U', which is, in like manner, providedwith corresponding ears t.

It will be seen that by this construction access is had to all thevalves by simply removing the air-chamber, the plate E resting looselybetween it and the chambers below, so it can be lifted off as soon asthe top is removed. If preferred, puppet-valves o and a may besubstituted, as shown in Fig. 4, the construction being otherwise thesame.

The operation of a pump thus constructed will be readily understood byany one familiar with such machines,-and need not, therefore, bedescribed.

Having constructed two such pumps, I mount them at opposite ends of asuitable frame or base, as shown in Fig. l, with the end of thepiston-rod J of each working in a stationary post or guide, h. Midwaybetween the two pumps I mount a shaft, 0, having a balance-wheel, W, anda crank, a. To the crank on opposite sides I attach a connectingrod, H,which is made to straddle the pistourod J, and which is connected at itsend to a cross-head, M,l which slides freely on the piston-rod when notfastened, these parts being shown detached in Fig. 7. The cross-head isconnected to the piston-rod J by a key, S, which can be readilywithdrawn, thereby releasing the cross-head M and its connectingrod Hfrom the piston-rod J whenever desired, the cross-head playing backandrforth on the rod J when thus released. It will thus be seen thateither pump can be disconnected at will by simply withdrawing the key S,and thus either pump be used alone, or both together, as may be desired.

The two chambers A are each provided with a separate discharge-pipe, m,as shown in Fig. 2, it being provided with a valve, T, by which it canbe closed at pleasure. From each chamber A there also extends a pipe, V,which joins at the center with a single discharge-pipe, N,

each of the Ypipes/being provided with aY valve, R, by which either orboth may be closed at pleasure. By this arrangement it will be seen thatwater can be discharged direct from either chamber alone through itspipe m, or both may be made to discharge simultaneouslythrough pipeN; oreither may be shut o' and the other alone made to discharge through thepipe N.

To operate the pumps, power is to be applied to the shaft O, which maybe provided withsuitable pulleys or gear-wheels for that purpose; or, ifpreferred, the shaft O may be provided with gear-wheels operating,l twoseparate crank-shafts, the connecting-rods H being connected separatelyto these crank-shafts, by which means the cranks can be set at anydesired angle relatively to'each other.

Having thus described my invention, what I claim is 1. The combinationof the two pumps, mounted on opposite endsv of a common frame, thecrankshaft O, mounted midway between the two pumps, and the pitmen H,having their inner ends mounted on the crank, and their outer endsconnected to the elongated piston-rods by means of the cross-heads M andkeys S, as shown, so that either pitman may be disconnected andpermitted .to slide freely on the rod.

2. The combination 0f the two pumps, having their pistons bothdetachably connected to a common driving-shaft by mechanismsubstantially such as shown, and each pump being provided with twodischarge-openings, m and c, the latter being united by a pipe, V,

having cocks R, to a single pipe, N, as shown and described.

JULIAN GRZYBOWSKI. Witnesses:

JOHN GHR. JACOB, FRANK MELLIN.

